25510005145 has 8 divisors (see below), whose sum is σ = 30622991040. Its totient is φ = 20400680880.

The previous prime is 25510005139. The next prime is 25510005161. The reversal of 25510005145 is 54150001552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25510005145 - 2⁹ = 25510004633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900055 + ... + 927964.

It is an arithmetic number, because the mean of its divisors is an integer number (3827873880).

Almost surely, 2^25510005145 is an apocalyptic number.

It is an amenable number.

25510005145 is a deficient number, since it is larger than the sum of its proper divisors (5112985895).

25510005145 is a wasteful number, since it uses less digits than its factorization.

25510005145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830815.

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 25510005145 its reverse (54150001552), we get a palindrome (79660006697).

The spelling of 25510005145 in words is "twenty-five billion, five hundred ten million, five thousand, one hundred forty-five".